Thanks everyone, you're making me blush
The tune survives in Cyprus under the name Azizies (aziziye in turkish) which effectively attributes it to the composer. There is also a living unbroken tradition of musicians especially in Istanbul who have preserved the ottoman classical repertoire and who attribute this to the particular composer. His interest in music is documented by historians but he was after all a busy man, only a handful of tunes are attributed to him. Anyway, the music deserves to be heard independent of the politics of its composer
Syrtos is a traditional dance fairly common in several areas, including Cyprus and the Aegean all the way up to Istanbul. According to my non specialist and simplistic view there was an increasing influence on art music by popular music towards the end of the 19th century, reflected in the adoption of popular dance rhythms and their terminology by composers (i.e calling it sirto and not just usul sofyan, which would be the "classical" term for this rhythm).
The makam (melodic mode) is hicaz (in turkish spelling, the same term appears in arabic and greek popular terminology).
I've arranged it based on various versions from recordings and scores, using my classical in standard tuning. I have to admit it's not very guitaristic, it would work much better on a violin
, and I thought there wasn't much room for harmony. Rasgueado I borrowed from both flamenco and saz, setar etc technique, though this is not in the style of either .